The San Francisco – Oakland Bay Bridge is unique by the fact the bridge goes into and through an island. The Yerba Buena tunnel disects through Treasure Island and is the midpoint of the bridge. Forming part of Interstate 80 and of the direct road route between San Francisco and Oakland, it carries approximately 270,000 vehicles per day on its two decks. It has one of the longest spans in the world. Shown in this panorama is the portion of the bridge from San Francisco into Treasure Island. Not seen in this panorama is the 2nd portion of the bridge which spans from Treasure Island to Oakland.
The Bay Bridge opened for traffic on November 12, 1936, six months before the Golden Gate Bridge.